Green Remediation of Carbamazepine from Water Using Novel Magnetic Iron Modified Carbonized Baggasse: Kinetics, Equilibrium and  Mechanistic Studies

Selly Jemutai-Kimosop; Veronica A. Okello; Francis Orata; Zachary M. Getenga; Victor O. Shikuku

doi:10.9734/CSJI/2017/32444

Research Article Open access CC BY 4.0

Green Remediation of Carbamazepine from Water Using Novel Magnetic Iron Modified Carbonized Baggasse: Kinetics, Equilibrium and Mechanistic Studies

Selly Jemutai-Kimosop, Veronica A. Okello, Francis Orata, Zachary M. Getenga, Victor O. Shikuku

Chemical Science International Journal · pp. 1–9 · Published 15 Mar 2017

10.9734/CSJI/2017/32444

Abstract

Baggasse derived biochar magnetically modified with iron (α-Fe2O3-CBG) was fabricated, characterized and applied as a low-cost adsorbent for the removal of carbamazepine (CBZ), a pharmaceutically active compound which has been reported as an emergent water contaminant. Characterization of the synthesized (α-Fe2O3-CBG) composite showed that iron was effectively impregnated onto the carbonized bagasse network. The composite was able to achieve 60.9 % CBZ removal within a period of 4 hours. The time-dependency adsorption data followed the pseudo-second order kinetic law while the intraparticle diffusion model indicated that pore diffusion is not the sole operative rate-determining mechanism with significant boundary layer effects. Freundlich model best explained the equilibrium sorption data. The adsorption extent was also strongly pH-dependent though adsorption mechanism is significantly driven by electrostatic interactions at lower pH. Furthermore, magnetic separation of the contaminant-laden adsorbent was successfully accomplished.

Carbamazepine adsorption water magnetic iron-oxide

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Selly Jemutai-Kimosop, Veronica A. Okello, Francis Orata, Zachary M. Getenga, Victor O. Shikuku (2017). Green Remediation of Carbamazepine from Water Using Novel Magnetic Iron Modified Carbonized Baggasse: Kinetics, Equilibrium and Mechanistic Studies. Chemical Science International Journal , 1–9. https://doi.org/10.9734/CSJI/2017/32444

Affiliations

Selly Jemutai-Kimosop — Masinde Muliro University of Science and Technology, P.O.Box 190, Kakamega, Kenya
Veronica A. Okello — Machakos University, P.O.Box 136-90100, Machakos, Kenya
Francis Orata — Masinde Muliro University of Science and Technology, P.O.Box 190, Kakamega, Kenya
Zachary M. Getenga — Chuka University, P.O.Box 109-60400, Chuka, Kenya
Victor O. Shikuku — Maseno University, Private Bag, Maseno, Kenya

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